From patchwork Wed Sep 24 07:27:32 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 4962001 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A94779F32B for ; Wed, 24 Sep 2014 07:38:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E041A2021A for ; Wed, 24 Sep 2014 07:38:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 027AC20173 for ; Wed, 24 Sep 2014 07:38:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752955AbaIXHiN (ORCPT ); Wed, 24 Sep 2014 03:38:13 -0400 Received: from mga11.intel.com ([192.55.52.93]:49240 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752157AbaIXHiM (ORCPT ); Wed, 24 Sep 2014 03:38:12 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP; 24 Sep 2014 00:38:11 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,587,1406617200"; d="scan'208";a="604509036" Received: from ahunter-desktop.fi.intel.com ([10.237.72.97]) by fmsmga002.fm.intel.com with ESMTP; 24 Sep 2014 00:29:03 -0700 From: Adrian Hunter To: Ulf Hansson , Chris Ball Cc: linux-mmc Subject: [PATCH 6/7] mmc: sdhci: Let a driver override timeout clock frequency Date: Wed, 24 Sep 2014 10:27:32 +0300 Message-Id: <1411543653-3728-7-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1411543653-3728-1-git-send-email-adrian.hunter@intel.com> References: <1411543653-3728-1-git-send-email-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Let a driver override the timeout clock frequency by populating it before calling sdhci_add_host(). Note the value will otherwise be zero because sdhci_host is zeroed when allocated. Signed-off-by: Adrian Hunter --- drivers/mmc/host/sdhci.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index abad5e5..6ada726 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2791,6 +2791,7 @@ int sdhci_add_host(struct sdhci_host *host) u32 caps[2] = {0, 0}; u32 max_current_caps; unsigned int ocr_avail; + unsigned int override_timeout_clk; int ret; WARN_ON(host == NULL); @@ -2804,6 +2805,8 @@ int sdhci_add_host(struct sdhci_host *host) if (debug_quirks2) host->quirks2 = debug_quirks2; + override_timeout_clk = host->timeout_clk; + sdhci_do_reset(host, SDHCI_RESET_ALL); host->version = sdhci_readw(host, SDHCI_HOST_VERSION); @@ -2972,6 +2975,9 @@ int sdhci_add_host(struct sdhci_host *host) mmc->max_busy_timeout /= host->timeout_clk; } + if (override_timeout_clk) + host->timeout_clk = override_timeout_clk; + mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23; mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;